Editor>View>Duration Bars — Is it possible to edit duration bars without affecting notation view?

I started up an old computer with Garageband '11 (6.0.5) and indeed I had remembered correctly. When I click on a note in notation view I see a green duration bar. And dragging the tail rightward does not affect the note value on the staff, IF the measure has a note after the clicked note. In contrast, in a measure with a single quarter note on beat 1, rightward dragging the duration bar's tail alters the note head as the duration bar extends in the unoccupied space.

However, if the selected note is closely followed by another note then dragging the duration bar's tail rightward leaves leaves the quarter note face value unchanged ... nut with an extended duration bar. Similarly, if there's no subsequent confining note in the measure, a half note stays a half note when I drag its duration bar rightward or leftward.

Interesting that this changed in my current Garageband 10.4.9.

For comparison I opened my earlier version of Logic 10.4.8 on the old computer. 10.4.8 behaves like my current version of logic 10.7.9, where dragging the duration bar in notation view always changes the note value. That is, I haven't found a way to leave notation view unchanged after dragging duration bars in notation view.

That's all I know.